JP2009114923A - Egr cooler - Google Patents

Egr cooler Download PDF

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Publication number
JP2009114923A
JP2009114923A JP2007287727A JP2007287727A JP2009114923A JP 2009114923 A JP2009114923 A JP 2009114923A JP 2007287727 A JP2007287727 A JP 2007287727A JP 2007287727 A JP2007287727 A JP 2007287727A JP 2009114923 A JP2009114923 A JP 2009114923A
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cooling water
shell
egr cooler
surface side
introduction portion
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JP2007287727A
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Japanese (ja)
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Isao Ayuse
勲 鮎瀬
Susumu Kozai
晋 古財
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Tokyo Radiator Mfg Co Ltd
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Tokyo Radiator Mfg Co Ltd
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Priority to JP2007287727A priority Critical patent/JP2009114923A/en
Publication of JP2009114923A publication Critical patent/JP2009114923A/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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Abstract

<P>PROBLEM TO BE SOLVED: To prevent local boiling and thereby prevent crack generation in a tube by uniformly supplying cooling water inside a shell regardless of the position of a cooling water inlet port and a cooling water outlet port in an EGR cooler. <P>SOLUTION: The EGR cooler 100 includes a hollow shell 110 having a cooling water inlet port 150 and a cooling water outlet port 160, and a plurality of tubes 140 disposed inside the shell 110 for passage of an EGR gas. The shell 110 includes a top face 113 and a side face 115. The cooling water inlet port 150 has a top face side inlet part 151 for introducing the cooling water from the top face 113 side, and a side face side introduction port 152 for introducing the cooling water from the side face 115 side. An adapter member 120 is disposed in the shell 110 for covering the cooling water inlet port 150. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明はＥＧＲクーラに係り、冷却水導入口及び冷却水排出口を備えた中空状のシェルと、前記シェル内部に配置されＥＧＲガスが通過する複数のチューブとを備えたＥＧＲクーラに関する。   The present invention relates to an EGR cooler, and more particularly to an EGR cooler including a hollow shell having a cooling water inlet and a cooling water outlet, and a plurality of tubes that are arranged inside the shell and through which EGR gas passes.

一般にＥＧＲクーラは、冷却水導入口及び冷却水排出口を備えた中空状のシェルと、前記シェル内部に配置されＥＧＲガスが通過する複数のチューブとを備えるように構成されている。このようなＥＧＲクーラは、シェルの上下面又は左右面から垂直方向に冷却水導入管を設置し、冷却水をシェル内に導入する。シェル内の冷却水は、冷却水導入口から冷却水排出口に向かって、チューブとチューブの間及びシェルとチューブの間を通って流れ、チューブ内に流入されるＥＧＲガスを冷却する。   Generally, an EGR cooler is configured to include a hollow shell having a cooling water inlet and a cooling water discharge port, and a plurality of tubes that are arranged inside the shell and through which EGR gas passes. In such an EGR cooler, a cooling water introduction pipe is installed in a vertical direction from the upper and lower surfaces or the left and right surfaces of the shell, and the cooling water is introduced into the shell. The cooling water in the shell flows from the cooling water introduction port toward the cooling water discharge port, between the tubes and between the shells and the tubes, and cools the EGR gas flowing into the tubes.

このようなＥＧＲクーラでは、チューブとチューブとの間、及びシェルとチューブとの間に円滑に冷却水が流れ、熱交換が円滑に行えるよう様々な工夫がなされている。
特許文献１には、チューブ間のクリアランスを保つため、及び振動によるチューブ亀裂防止のためダボを形成し、このダボの配列・形状やチューブとシェルのクリアランスの調整をすることにより冷却水の流れを改善させるようにしたものが記載されている。 In such an EGR cooler, various devices have been devised so that cooling water can smoothly flow between the tubes and between the shell and the tubes so that heat exchange can be performed smoothly.
In Patent Document 1, dowels are formed to maintain the clearance between the tubes and to prevent tube cracking due to vibration, and the flow of cooling water is adjusted by adjusting the arrangement / shape of the dowels and the clearance between the tubes and the shell. What has been improved is described.

また、特許文献２には、ＥＧＲクーラのシェル垂直断面の中央位置に、シェルの長手方向に沿って延びる誘導部材が配置されており、シェル内へ供給された冷却水は、誘導部材によってシェルの垂直断面の外周方向へ誘導され、渦流や旋回流のような形態の流れを形成し、中心側から外周側へ至る範囲を全体的に流動し、これにより、冷却水がシェル内において局所的に滞留する個所、いわゆる淀み部が形成されるのを誘導部材によって極力阻止することができるものが記載されている。   Further, in Patent Document 2, a guide member extending along the longitudinal direction of the shell is disposed at the center position of the shell vertical cross section of the EGR cooler, and the cooling water supplied into the shell is supplied to the shell by the guide member. It is guided in the outer peripheral direction of the vertical section, forms a flow in the form of a vortex or swirl, and flows in the whole range from the center side to the outer periphery side. It describes what can be prevented as much as possible by the guide member from forming a staying portion, a so-called stagnation portion.

また、特許文献３には、ＥＧＲガスが流れる複数のＥＧＲパイプと、ＥＧＲパイプを収容し内部を冷却水が流れる外周ケースとを有し、外周ケースは中間部の断面がほぼ円形であって、その両方の端部は中間部よりも径が拡大されており、かつ、ＥＧＲガスの入口側の端部には冷却水の入口管が、また、ＥＧＲガスの出口側の端部には出口管が外周ケースに対し接線方向に設け、これにより、冷却水 入口部分では、流れが均一となり、局部的な過熱個所の発生を防止することができるものが記載されている。   Patent Document 3 has a plurality of EGR pipes through which EGR gas flows, and an outer case that houses the EGR pipe and through which cooling water flows, and the outer case has a substantially circular cross section at the intermediate portion. Both of the end portions are larger in diameter than the intermediate portion, and an inlet pipe for cooling water is provided at the end part on the inlet side of the EGR gas, and an outlet pipe is provided at the end part on the outlet side of the EGR gas. Is provided in a tangential direction with respect to the outer case, so that the flow can be made uniform at the cooling water inlet portion and local overheating can be prevented from occurring.

そして、特許文献４には、扁平チューブの平面の各部で淀みが生じがちな領域を除き、比較的冷却水の流通の速い流通領域のみに流通疎外用の多数の膨出部を互いに離間して扁平チューブの外面側に突出形成するものが記載されている。
特開２００３−０９０６９３公報 特開２００３−８３１７４公報 特開２００５−２７３５１２公報 特開２００４−１７７０６０公報 And in patent document 4, except the area | region which tends to produce stagnation in each part of the flat surface of a flat tube, many bulging parts for distribution | circulation alienation are spaced apart from each other only in the circulation area | region where the circulation of cooling water is comparatively quick. It describes what protrudes from the outer surface side of the flat tube.
JP 2003-090693 A JP 2003-83174 A JP 2005-273512 A JP 2004-177060 A

ところで、このようなＥＧＲクーラにおいて、冷却水は、シェル内を満遍なく流れることが望まれる。図１０は従来のＥＧＲクーラの構成の一例を示す模式図であり、（ａ）は正面図、（ｂ）は側面図である。このＥＧＲクーラ５１０は、チューブ５１６を内蔵したシェル５１１の対角線上に冷却水導入口５１４と冷却水排出口５１５とを配置している。即ち、シェル５１１の下側面５１２の一方端（この例では右端）に冷却水導入口５１４を配置すると共に、シェル５１１の上側面５１３の他方端（この例では左端）に冷却水排出口５１５を配置し、冷却水を下から入れて上から出し、冷却水が経路Ｇに沿って流れるようにしている。   By the way, in such an EGR cooler, it is desired that the cooling water flows evenly in the shell. FIG. 10 is a schematic diagram showing an example of the configuration of a conventional EGR cooler, where (a) is a front view and (b) is a side view. In this EGR cooler 510, a cooling water inlet 514 and a cooling water outlet 515 are arranged on a diagonal line of a shell 511 in which a tube 516 is built. That is, the cooling water introduction port 514 is disposed at one end (right end in this example) of the lower side surface 512 of the shell 511, and the cooling water discharge port 515 is disposed at the other end (left end in this example) of the upper side surface 513 of the shell 511. The cooling water is inserted from the bottom and discharged from the top so that the cooling water flows along the path G.

しかし、近年エンジンレイアウトの制限が多くなり、冷却水導入口及び冷却水排出口はこのように理想的に配置することは難しくなってきている。図１１及び図１２はレイアウト制限下におけるＥＧＲクーラを示す模式図である。   However, in recent years, restrictions on the engine layout have increased, and it has become difficult to ideally arrange the cooling water inlet and the cooling water outlet. 11 and 12 are schematic views showing an EGR cooler under layout restrictions.

図１１に示すＥＧＲクーラ５２０は、シェル５２１の一方向の面、例えば上側面５２２に冷却水導入口５２４と冷却水排出口５２５とを配置したものである。この場合、冷却水導入口５２４から流入した冷却水は、シェル５２１の上部を経路Ｈに沿って流れやすくなり、シェル５２１の下部の領域Ｉには冷却水の淀みが発生しやすい。   An EGR cooler 520 shown in FIG. 11 has a cooling water introduction port 524 and a cooling water discharge port 525 arranged on a unidirectional surface of the shell 521, for example, an upper side surface 522. In this case, the cooling water flowing in from the cooling water introduction port 524 easily flows along the path H in the upper part of the shell 521, and the stagnation of the cooling water is likely to occur in the region I below the shell 521.

また、図１２に示すＥＧＲクーラ５３０は、シェル５３１の下側面５３２に冷却水導入口５３４を配置し、シェル５３１の上側面５３３であって前記冷却水導入口５３４を配置した位置の略直上の位置に冷却水排出口５３５を配置したものである。この場合、冷却水導入口５３４から流入した冷却水は、そのまま上方に経路Ｊに沿って流れやすくなり、シェル５３１の片側の領域Ｋに冷却水の淀みが発生しやすい。   Further, the EGR cooler 530 shown in FIG. 12 has a cooling water introduction port 534 disposed on the lower side surface 532 of the shell 531, and is located on the upper side surface 533 of the shell 531 substantially immediately above the position where the cooling water introduction port 534 is disposed. The cooling water discharge port 535 is disposed at the position. In this case, the cooling water flowing in from the cooling water inlet 534 easily flows upward along the path J, and the stagnation of the cooling water is likely to occur in the region K on one side of the shell 531.

このようにシェル内に冷却水の淀みが発生すると、この冷却水の淀みの付近で局所的に沸騰が発生し、チューブが冷却水から露出して加熱されて膨張し、最悪の場合チューブに亀裂が発生することがある。しかし、上述した従来のＥＧＲクーラで採られた構成ではこのような事態を予防することができない。   When stagnation of cooling water occurs in the shell in this way, boiling occurs locally near the stagnation of this cooling water, the tube is exposed from the cooling water and heated to expand, and in the worst case, the tube cracks. May occur. However, such a situation cannot be prevented with the configuration adopted in the above-described conventional EGR cooler.

本発明は、係る問題点に鑑みてなされたものであり、ＥＧＲクーラに冷却水導入口及び冷却水排出口位置に関係なく、シェルの内部に冷却水を満遍なく流すことができ、局所的な沸騰を防止し、ひいてはチューブの亀裂発生を防止することができるＥＧＲクーラを提供することをその課題とする。   The present invention has been made in view of such problems, and it is possible to flow cooling water uniformly into the shell regardless of the position of the cooling water inlet and the cooling water outlet in the EGR cooler. It is an object of the present invention to provide an EGR cooler that can prevent the occurrence of cracks and, in turn, the occurrence of cracks in the tube.

本発明において、前記課題が効果的に解決される手段は以下の通りである。
請求項１の発明は、冷却水導入口及び冷却水排出口を備えた中空状のシェルと、前記シェル内部に配置されＥＧＲガスが通過する複数のチューブとを備えたＥＧＲクーラにおいて、前記シェルは、上側面と横側面とを備え、前記冷却水導入口は、前記上側面側から冷却水を導入する上面側導入部と、前記横側面側から冷却水を導入する横面側導入部とを備えていることを特徴とするＥＧＲクーラである。 In the present invention, means for effectively solving the above problems are as follows.
The invention of claim 1 is an EGR cooler comprising a hollow shell having a cooling water introduction port and a cooling water discharge port, and a plurality of tubes arranged inside the shell and through which EGR gas passes. The cooling water introduction port includes an upper surface side introduction portion that introduces cooling water from the upper side surface side, and a lateral surface side introduction portion that introduces cooling water from the side surface side. It is an EGR cooler characterized by comprising.

請求項２の発明は、請求項１記載のＥＧＲクーラにおいて、前記冷却水導入口の上面側導入部と前記横面側導入部とは連続して形成されていることを特徴とする。   According to a second aspect of the present invention, in the EGR cooler according to the first aspect, the upper surface side introduction portion and the lateral surface side introduction portion of the cooling water introduction port are formed continuously.

請求項３の発明は、請求項２記載のＥＧＲクーラにおいて、前記冷却水導入口は複数配置されていることを特徴とする。   A third aspect of the present invention is the EGR cooler according to the second aspect, wherein a plurality of the cooling water inlets are arranged.

請求項４の発明は、請求項１記載のＥＧＲクーラにおいて、前記上面側導入部と前記横面側導入部とは、前記上側面及び前記横側面の接合部を挟んで配置されていることを特徴とする。   According to a fourth aspect of the present invention, in the EGR cooler according to the first aspect, the upper surface side introduction portion and the lateral surface side introduction portion are arranged with the joint portion between the upper side surface and the lateral side surface interposed therebetween. Features.

請求項５の発明は、請求項１乃至４のいずれか記載のＥＧＲクーラにおいて、前記シェルには冷却水を前記冷却水導入口に導く筒状のアダプタ部材が配置されており、前記アダプタ部材は、前記上面側導入部及び前記横面側導入部を覆ってシェルに取り付けられていることを特徴とする。   According to a fifth aspect of the present invention, in the EGR cooler according to any one of the first to fourth aspects, a cylindrical adapter member that guides cooling water to the cooling water inlet is disposed in the shell. The upper surface side introducing portion and the lateral surface side introducing portion are covered with the shell and attached to the shell.

請求項１の発明によれば、シェルは、上側面と横側面とを備え、前記冷却水導入口は、前記上側面側から冷却水を導入する上面側導入部と、前記横側面側から冷却水を導入する横面側導入部とを備えるようにしたから、シェルの冷却水導入口から流入する冷却水はシェルの上方及び側方から流入されることになり、シェルの隅部や、チューブに邪魔をされ冷却水の淀みが発生しやすい領域にも効率よく流れ、局所的な沸騰が防止され、ＥＧＲクーラの破損を防いでＥＧＲクーラの性能を最大限に引き出すことができる。また、本発明では上面側導入部と横面側導入部との開口面積を変更することで、ＥＧＲクーラのシェルの大きさやチューブの配列、冷却水排出口の位置によって変化するシェル内の冷却水の流れ状態を最良となるように調整することができる。さらに、本発明ではＥＧＲクーラの外観形状を大きく変更する必要がなく、ＥＧＲクーラを車両に搭載するに際して影響を与えない他、冷却水を最適な流れにして冷却効率を高めることができるので、冷却水の量を減らすことができ、冷却水ポンプへの負担を軽減させることができる。   According to the invention of claim 1, the shell includes an upper side surface and a lateral side surface, the cooling water introduction port cools from the upper side surface side, and an upper surface side introduction portion that introduces cooling water from the upper side surface side. Since the lateral side introduction part for introducing water is provided, the cooling water flowing in from the cooling water introduction port of the shell is introduced from the upper side and the side of the shell, and the corners of the shell and the tube Therefore, it can efficiently flow into an area where the cooling water is likely to stagnate and local boiling is prevented, and the EGR cooler can be prevented from being damaged to maximize the performance of the EGR cooler. Further, in the present invention, the cooling water in the shell that changes depending on the size of the shell of the EGR cooler, the arrangement of the tubes, and the position of the cooling water discharge port by changing the opening area between the upper surface side introduction portion and the lateral surface side introduction portion. It is possible to adjust the flow state of the gas to the best. Furthermore, in the present invention, it is not necessary to greatly change the external shape of the EGR cooler, and it does not affect the mounting of the EGR cooler on the vehicle. The amount of water can be reduced, and the burden on the cooling water pump can be reduced.

請求項２の発明によれば、前記冷却水導入口の上面側導入部と前記横面側導入部とを連続するものとしているので、冷却水導入口の開口面積を大きくすることができ、多量の冷却水を導入することができ、ＥＧＲクーラの冷却力を大きなものとすることができる。   According to the invention of claim 2, since the upper surface side introduction portion and the lateral surface side introduction portion of the cooling water introduction port are continuous, the opening area of the cooling water introduction port can be increased, and a large amount Thus, the cooling power of the EGR cooler can be increased.

請求項３の発明によれば、冷却水導入口を複数配置するようにしたので、複数の冷却水導入口の間において、シェルの上側面と横側面とが連続した部分を形成することができ、シェルの剛性低下を防止することができる。   According to the invention of claim 3, since a plurality of cooling water inlets are arranged, a portion where the upper side surface and the lateral side surface of the shell are continuous can be formed between the plurality of cooling water inlets. , It is possible to prevent the rigidity of the shell from being lowered.

請求項４の発明によれば、上面側導入部と横面側導入部とがシェルの上側面と横側面との接合部を挟んで配置されているので、それぞれの導入部の大きさを独立して変更でき、各導入部の大きさを所望の割合に変更することができ、ＥＧＲクーラのシェルの大きさやチューブの配列、冷却水排出口の位置によって変化するシェル内の冷却水の流れ状態を最良となるように調整することができる。また、上面側導入部と横面側導入部との間において、シェルの上側面と横側面を連続したものとすることができ、シェルの剛性低下を防止することができる。   According to the invention of claim 4, since the upper surface side introduction portion and the lateral surface side introduction portion are disposed with the joint portion between the upper side surface and the lateral side surface of the shell interposed therebetween, the sizes of the respective introduction portions are independent. The size of each introduction part can be changed to a desired ratio, and the flow state of the cooling water in the shell changes according to the size of the shell of the EGR cooler, the arrangement of the tubes, and the position of the cooling water discharge port Can be adjusted to be the best. Further, the upper side surface and the lateral side surface of the shell can be made continuous between the upper surface side introduction portion and the lateral surface side introduction portion, so that the rigidity of the shell can be prevented from being lowered.

請求項５の発明によれば、シェルには冷却水を前記冷却水導入口に導く筒状のアダプタ部材を配置したので、冷却水は冷却水導入口に配置されたアダプタ部材に案内されてシェル内に斜め下方に方向付けられて導入することができ、シェルの隅部や、チューブに邪魔をされ冷却水の淀みが発生しやすい領域により効率よく流れ、局所的な沸騰が防止され、ＥＧＲクーラの破損を防いでＥＧＲクーラの性能を最大限に引き出すことができる。   According to the invention of claim 5, since the cylindrical adapter member for guiding the cooling water to the cooling water inlet is arranged in the shell, the cooling water is guided by the adapter member arranged at the cooling water inlet and the shell The EGR cooler can be introduced by being directed obliquely downward into the inside, efficiently flowing through the corners of the shell and the area where the tube is obstructed and stagnation of the cooling water is likely to occur, and local boiling is prevented. It is possible to maximize the performance of the EGR cooler.

以下、本発明の実施形態に係るＥＧＲクーラを図面に基づいて説明する。図１は本発明の第１実施態様に係るＥＧＲクーラの外観を示す斜視図、図２は図１に示したＥＧＲクーラをアダプタ部材を取り外して示した斜視図、図３は図１に示したＥＧＲクーラの構造を示す図１中Ａ−Ａ線に相当する断面図である。   Hereinafter, an EGR cooler according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an appearance of an EGR cooler according to the first embodiment of the present invention, FIG. 2 is a perspective view showing the EGR cooler shown in FIG. 1 with an adapter member removed, and FIG. 3 is shown in FIG. It is sectional drawing equivalent to the AA line in FIG. 1 which shows the structure of an EGR cooler.

本例に係るＥＧＲクーラ１００は、図１に示すように、シェル１１０内にＥＧＲガスを流入させる複数の扁平したプレートタイプのチューブ１４０を配置して構成され、シェル１１０内に冷却水を流通させ、チューブ１４０内のＥＧＲガスを冷却する。なお、シェル１１０の両端に設けられ、ＥＧＲガスを案内するヘッダは図示を省略している。   As shown in FIG. 1, the EGR cooler 100 according to the present example is configured by arranging a plurality of flat plate-type tubes 140 that allow EGR gas to flow into the shell 110, and allows cooling water to flow through the shell 110. The EGR gas in the tube 140 is cooled. Note that headers that are provided at both ends of the shell 110 and guide the EGR gas are not shown.

シェル１１０は、金属板をプレス加工して形成した２枚のコ字状プレート１１１，１１２を組み合わせて、上側面１１３、下側面１１４、一横側面１１５、他横側面１１６を備えた略四角筒状に形成されている。そして、シェル１１０の一端部には冷却水導入口１５０を、他端に冷却水排出口１６０を開設して冷却水導入口１５０から冷却水をシェル１１０内に流入し、冷却水排出口１６０から熱交換をした冷却水を排出している。本例では、冷却水導入口１５０にはアダプタ部材１２０を、また、冷却水排出口１６０には配水管部材１３０を接続している。   The shell 110 is a substantially rectangular tube having an upper side 113, a lower side 114, one lateral side 115, and another lateral side 116 by combining two U-shaped plates 111 and 112 formed by pressing a metal plate. It is formed in a shape. Then, a cooling water inlet 150 is provided at one end of the shell 110, and a cooling water outlet 160 is provided at the other end so that cooling water flows into the shell 110 from the cooling water inlet 150, and from the cooling water outlet 160. Cooling water after heat exchange is discharged. In this example, the adapter member 120 is connected to the cooling water inlet 150, and the water pipe member 130 is connected to the cooling water outlet 160.

冷却水導入口１５０は、図２に示すように、シェル１１０の上側面１１３に開設された上面側導入部１５１と、一横側面１１５に開設された横面側導入部１５２とを備え、上面側導入部１５１と横面側導入部１５２とは連続するように形成されている。そして、アダプタ部材１２０は、冷却水導入口１５０には上面側導入部１５１と横面側導入部１５２とを覆い、上面側導入部１５１及び横面側導入部１５２から冷却水を導入する。   As shown in FIG. 2, the cooling water introduction port 150 includes an upper surface side introduction portion 151 established on the upper side surface 113 of the shell 110 and a lateral surface side introduction portion 152 established on one lateral side surface 115. The side introduction part 151 and the lateral surface side introduction part 152 are formed to be continuous. The adapter member 120 covers the upper surface side introduction portion 151 and the lateral surface side introduction portion 152 at the cooling water introduction port 150, and introduces cooling water from the upper surface side introduction portion 151 and the lateral surface side introduction portion 152.

配水管部材１３０は、筒部１３１と、筒部１３１の一端に形成されシェル１１０に接続されるシェル側フランジ部１３２と、筒部１３１の他端に形成され排水パイプが連結される排水側フランジ部１３３とを備える。   The water distribution pipe member 130 includes a cylindrical portion 131, a shell side flange portion 132 formed at one end of the cylindrical portion 131 and connected to the shell 110, and a drain side flange formed at the other end of the cylindrical portion 131 and connected to a drain pipe. Part 133.

チューブ１４０は、扁平した中空の排気チューブ１４１と、空隙を隔てて排気チューブ１４１を配置するためのダボ１４２を備え、縦方向に並設される。   The tube 140 includes a flat hollow exhaust tube 141 and a dowel 142 for disposing the exhaust tube 141 across a gap, and is arranged in parallel in the vertical direction.

次にアダプタ部材１２０について説明する。図４は図１に示したＥＧＲクーラのアダプタ部材を示すものであり、（ａ）は斜視図、（ｂ）は平面図、図５は図１に示したＥＧＲクーラのアダプタ部材を示す図４（ｂ）中のＢ−Ｂ線に相当する断面図である。   Next, the adapter member 120 will be described. 4 shows the adapter member of the EGR cooler shown in FIG. 1, (a) is a perspective view, (b) is a plan view, and FIG. 5 shows the adapter member of the EGR cooler shown in FIG. It is sectional drawing equivalent to the BB line in (b).

アダプタ部材１２０は、前記シェル１１０への接続側のシェル側部１２１ａ及び冷却水が導入される導入側部１２１ｂを備えて湾曲形成された湾曲筒部１２１と、この湾曲筒部１２１のシェル側部１２１ａの端部に形成され、アダプタ部材１２０をシェル１１０に取り付けるための取付端部１２３と、導入側部１２１ｂに開設された穴部１２６の周囲に形成され、冷却水が導入される給水パイプが連結される給水フランジ部１２７とを備えている。   The adapter member 120 includes a curved cylinder 121 having a shell side 121a on the connection side to the shell 110 and an introduction side 121b into which cooling water is introduced, and a shell side of the curved cylinder 121. A water supply pipe that is formed at the end portion of 121a and is formed around an attachment end portion 123 for attaching the adapter member 120 to the shell 110 and a hole portion 126 formed in the introduction side portion 121b and into which cooling water is introduced. And a water supply flange portion 127 to be connected.

アダプタ部材１２０は、シェル１１０に形成された冷却水導入口１５０を覆って取り付けられ、取付端部１２３には、シェル１１０の上側面１１３への接合部１２４及び、シェル１１０の一横側面１１５への接合部１２５が形成されている。ここでアダプタ部材１２０は鋳物、あるいは板金加工された金属板材で形成され、シェル１１０に溶接あるいは蝋付けで取り付けられる。   The adapter member 120 is attached so as to cover the cooling water inlet 150 formed in the shell 110, and the attachment end portion 123 is connected to the joint portion 124 to the upper side surface 113 of the shell 110 and to one lateral side surface 115 of the shell 110. Are formed. Here, the adapter member 120 is formed of a metal plate material that is cast or sheet metal processed, and is attached to the shell 110 by welding or brazing.

このような構成のＥＧＲクーラ１００において、アダプタ部材１２０によって冷却水導入口１５０に導入された冷却水は、シェル１１０内に上方（図３中矢印Ｃ）及び側方（同矢印Ｄ）から導入されシェル１１０の隅部や、チューブ１４０に邪魔をされ冷却水の淀みが発生しやすい領域にも効率よく流れる。このため、局所的な沸騰が防止され、ＥＧＲクーラの破損を防いでＥＧＲクーラの性能を最大限に引き出すことができる。   In the EGR cooler 100 having such a configuration, the cooling water introduced into the cooling water inlet 150 by the adapter member 120 is introduced into the shell 110 from above (arrow C in FIG. 3) and from the side (arrow D). It efficiently flows to the corners of the shell 110 and the region where the tube 140 is obstructed and the cooling water is likely to stagnate. For this reason, local boiling is prevented, damage to the EGR cooler can be prevented, and the performance of the EGR cooler can be maximized.

発明者は上述したＥＧＲクーラ１００内における冷却水の速度分布を解析した。図６はＥＧＲクーラ内の冷却水速度の分布を示すものであり、（ａ）は比較例のＥＧＲクーラの解析結果示す分布図、（ｂ）は第１実施例に係るＥＧＲクーラの解析結果を示す分布図、（ｃ）は第２実施例に係るＥＧＲクーラの解析結果を示す分布図、（ｄ）は解析個所を示す説明図である。   The inventor analyzed the velocity distribution of the cooling water in the EGR cooler 100 described above. FIG. 6 shows the distribution of the cooling water velocity in the EGR cooler, (a) is a distribution diagram showing the analysis result of the EGR cooler of the comparative example, (b) is the analysis result of the EGR cooler according to the first embodiment. (C) is a distribution diagram showing the analysis result of the EGR cooler according to the second embodiment, and (d) is an explanatory diagram showing the analysis location.

比較例としてはＥＧＲクーラ２００を用いた。図７は比較対象としたＥＧＲクーラの構成を示す断面図である。このＥＧＲクーラ２００は、冷却水導入口２５０をシェル２１０の上側面２１３に配置した他は、第１実施例と同様に構成されたものを使用した。即ちＥＧＲクーラ２００は、シェル２１０、アダプタ部材２２０、配水管部材２３０、チューブ２４０を備え、シェルの上側面２１３に冷却水導入口２５０と、冷却水排出口２６０を開設したものである。   As a comparative example, an EGR cooler 200 was used. FIG. 7 is a cross-sectional view showing a configuration of an EGR cooler to be compared. The EGR cooler 200 is the same as that of the first embodiment except that the cooling water inlet 250 is disposed on the upper side surface 213 of the shell 210. That is, the EGR cooler 200 includes a shell 210, an adapter member 220, a water distribution pipe member 230, and a tube 240, and a cooling water inlet 250 and a cooling water outlet 260 are opened on the upper side surface 213 of the shell.

比較例のＥＧＲクーラ２００では、図６（ａ）に示すように冷却水の流れが一方向に偏るため、Ａ−Ａ断面（図６（ｄ）参照、図７中の領域Ｅ）とＧ−Ｇ断面（同、図７中の領域Ｆ）に淀みが発生している。これに対して、本例のＥＧＲクーラ１００は、冷却水が上面側導入部１５１と横面側導入部１５２からシェル１１０内に導入されるため、図６（ｂ）に示すように、Ａ−Ａ断面（図６（ｄ）参照）及びＧ−Ｇ断面（同）の淀みが改善され良好な流速分布を示した。これにより、シェル１１０に冷却水導入口１５０として上面側導入部１５１と横面側導入部１５２を形成する効果が確認できた。   In the EGR cooler 200 of the comparative example, since the flow of the cooling water is biased in one direction as shown in FIG. 6A, the AA cross section (see FIG. 6D, region E in FIG. 7) and G- Stagnation occurs in the G cross section (region F in FIG. 7). On the other hand, in the EGR cooler 100 of this example, since the cooling water is introduced into the shell 110 from the upper surface side introduction portion 151 and the lateral surface side introduction portion 152, as shown in FIG. The stagnation of the A section (see FIG. 6 (d)) and the GG section (same) was improved, and a good flow velocity distribution was shown. Thereby, the effect which forms the upper surface side introduction part 151 and the horizontal surface side introduction part 152 in the shell 110 as the cooling water inlet 150 was confirmed.

以上のように、本例に係るＥＧＲクーラ１００によれば、アダプタ部材１２０から流入する冷却水は上面側導入部１５１及び横面側導入部１５２からシェル１１０内に導入された後、シェル１１０の隅部や、チューブ１４０に邪魔をされ冷却水の淀みが発生しやすい領域にも効率よく流れる。このため、冷却水の局所的な沸騰が防止され、ＥＧＲクーラ１００の破損を防いでＥＧＲクーラ１００の性能を最大限に引き出すことができる。また、本例に係るＥＧＲクーラ１００では、上面側導入部１５１と横面側導入部１５２との開口面積を変更すれば、ＥＧＲクーラのシェルの大きさやチューブの配列、冷却水排出口の位置によって変化するシェル内の冷却水の流れ状態を最良となるように調整することができる。さらに、本発明ではＥＧＲクーラの外観形状を大きく変更する必要がなく、ＥＧＲクーラを車両に搭載するに際して影響を与えない他、冷却水を最適な流れにして冷却効率を高めることができるので、冷却水の量を減らすことができ、冷却水ポンプへの負担を軽減させることができる。   As described above, according to the EGR cooler 100 according to this example, the cooling water flowing from the adapter member 120 is introduced into the shell 110 from the upper surface side introduction portion 151 and the lateral surface side introduction portion 152, and then the shell 110 It also efficiently flows into corners and areas where the tube 140 is obstructed and stagnation of cooling water is likely to occur. For this reason, local boiling of the cooling water is prevented, the EGR cooler 100 is prevented from being damaged, and the performance of the EGR cooler 100 can be maximized. Further, in the EGR cooler 100 according to this example, if the opening areas of the upper surface side introduction portion 151 and the lateral surface side introduction portion 152 are changed, the size of the shell of the EGR cooler, the arrangement of the tubes, and the position of the cooling water discharge port are changed. The flow state of the cooling water in the changing shell can be adjusted to be the best. Furthermore, in the present invention, it is not necessary to greatly change the external shape of the EGR cooler, and it does not affect the mounting of the EGR cooler on the vehicle. The amount of water can be reduced, and the burden on the cooling water pump can be reduced.

次に本発明の第２実施形態に係るＥＧＲクーラ３００について説明する。図８は本発明の第２実施態様に係るＥＧＲクーラをアダプタ部材を取り外した状態を示す斜視図である。本例に係るＥＧＲクーラ３００は、シェル３１０内にＥＧＲガスを流入させる複数のプレートタイプのチューブ３４０を配置して構成され、シェル３１０内に冷却水を流通させてチューブ３４０内のＥＧＲガスを冷却する。なお、シェル３１０の両端に設けられ、ＥＧＲガスを案内するヘッダは図示を省略している。   Next, an EGR cooler 300 according to a second embodiment of the present invention will be described. FIG. 8 is a perspective view showing the EGR cooler according to the second embodiment of the present invention with the adapter member removed. The EGR cooler 300 according to this example is configured by arranging a plurality of plate-type tubes 340 that allow EGR gas to flow into the shell 310, and cooling the EGR gas in the tubes 340 by circulating cooling water through the shell 310. To do. Note that headers provided at both ends of the shell 310 and guiding EGR gas are not shown.

シェル３１０は、２枚のコ字状プレート３１１，３１２を組み合わせて、上側面３１３、下側面３１４、一横側面３１５、他横側面３１６を備えた略四角筒状に形成されている。そして、シェル３１０の一端部には冷却水導入口３５０を、他端に冷却水排出口３６０を開設して、冷却水導入口３５０から冷却水をシェル３１０内に流入し、冷却水排出口３６０から熱交換をした冷却水を排出している。本例では、冷却水導入口３５０には前記第１の実施形態例で示したものと同様のアダプタ部材（図示していない）を、また、冷却水排出口３６０には配水管部材（図示していない）を接続している。   The shell 310 is formed in a substantially rectangular tube shape having an upper side surface 313, a lower side surface 314, one lateral side surface 315, and another lateral side surface 316 by combining two U-shaped plates 311 and 312. A cooling water inlet 350 is provided at one end of the shell 310, and a cooling water outlet 360 is provided at the other end. The cooling water flows into the shell 310 from the cooling water inlet 350, and the cooling water outlet 360 is provided. Cooling water that has undergone heat exchange is discharged. In this example, the cooling water inlet 350 is provided with an adapter member (not shown) similar to that shown in the first embodiment, and the cooling water outlet 360 is provided with a water pipe member (not shown). Not connected).

冷却水導入口３５０は、図８に示すように、シェル３１０の上側面３１３に開設された上面側導入部３５１と、この上面側導入部３５１と上側面３１３及び一横側面３１５が接合されている稜部３１７を挟んで一横側面３１５に開設された横面側導入部３５２と、を備えている。従って本例では、上面側導入部３５１と横面側導入部３５２とは不連続となり、上側面３１３と一横側面３１５とが接続される稜部３１７には離間個所が形成されない。そして、アダプタ部材は、冷却水導入口３５０には上面側導入部３５１と横面側導入部３５２とを覆い、上面側導入部３５１及び横面側導入部３５２から冷却水を導入する。   As shown in FIG. 8, the cooling water introduction port 350 has an upper surface side introduction portion 351 provided on the upper side surface 313 of the shell 310, and the upper surface side introduction portion 351, the upper side surface 313, and one lateral side surface 315 are joined. And a lateral surface side introduction portion 352 opened on one lateral side surface 315 with the ridge portion 317 interposed therebetween. Therefore, in this example, the upper surface side introduction portion 351 and the lateral surface side introduction portion 352 are discontinuous, and no separation portion is formed at the ridge portion 317 where the upper side surface 313 and the one lateral side surface 315 are connected. Then, the adapter member covers the upper surface side introduction portion 351 and the lateral surface side introduction portion 352 in the cooling water introduction port 350, and introduces cooling water from the upper surface side introduction portion 351 and the lateral surface side introduction portion 352.

図６（ｃ）にこのＥＧＲクーラ３００内における冷却水の速度分布解析結果を示す。比較例のＥＧＲクーラ２００では、図６（ａ）に示すように冷却水の流れが一方向に偏るため、Ａ−Ａ断面（図６（ｄ）参照、図７中の領域Ｅ）とＧ−Ｇ断面（同、図７中の領域Ｆ）に淀みが発生している。これに対して、本例のＥＧＲクーラ３００では、冷却水導入口３５０からの流れが上面側導入部３５１と横面側導入部３５２から導入され、比較例（図６（ａ））に比して、Ａ−Ａ断面（図６（ｃ）参照）の淀みが改善されており良好な流速分布を示した。   FIG. 6 (c) shows the speed distribution analysis result of the cooling water in the EGR cooler 300. In the EGR cooler 200 of the comparative example, since the flow of the cooling water is biased in one direction as shown in FIG. 6A, the AA cross section (see FIG. 6D, region E in FIG. 7) and G- Stagnation occurs in the G cross section (region F in FIG. 7). On the other hand, in the EGR cooler 300 of this example, the flow from the cooling water introduction port 350 is introduced from the upper surface side introduction portion 351 and the lateral surface side introduction portion 352, as compared with the comparative example (FIG. 6A). Thus, the stagnation of the AA cross section (see FIG. 6C) was improved, and a good flow velocity distribution was shown.

以上のように、本例に係るＥＧＲクーラ３００によれば、上面側導入部３５１と横面側導入部３５２との大きさを容易に所望の割合に変更することができ、ＥＧＲクーラのシェルの大きさやチューブの配列、冷却水排出口の位置によって変化するシェル内の冷却水の流れ状態を最良となるように調整することができる。また、上面側導入部３５１と横面側導入部３５２との間において、シェル３１０の上側面３１３と一横側面３１５とは、稜部３１７で連続したものとすることができ、シェル３１０の剛性を高いものとすることができる。   As described above, according to the EGR cooler 300 according to this example, the sizes of the upper surface side introduction portion 351 and the lateral surface side introduction portion 352 can be easily changed to a desired ratio, and the shell of the EGR cooler can be changed. The flow state of the cooling water in the shell, which changes depending on the size, the arrangement of the tubes, and the position of the cooling water discharge port, can be adjusted to be the best. Further, the upper side surface 313 and the one side surface 315 of the shell 310 can be continuous at the ridge 317 between the upper surface side introducing portion 351 and the lateral surface side introducing portion 352, and the rigidity of the shell 310 can be increased. Can be high.

次に、本発明の第３実施形態例に係るＥＧＲクーラ４００について説明する。図９は本発明の第３実施態様に係るＥＧＲクーラをアダプタ部材を取り外した状態を示す斜視図である。本例に係るＥＧＲクーラ４００は、シェル４１０内にＥＧＲガスを流入させる複数のプレートタイプのチューブ４４０を配置して構成され、シェル４１０内に冷却水を流通させ、チューブ４４０内のＥＧＲガスを冷却する。なお、シェル４１０の両端に設けられ、ＥＧＲガスを案内するヘッダは図示を省略している。   Next, an EGR cooler 400 according to a third embodiment of the present invention will be described. FIG. 9 is a perspective view showing a state in which the adapter member is removed from the EGR cooler according to the third embodiment of the present invention. The EGR cooler 400 according to the present example is configured by arranging a plurality of plate-type tubes 440 that allow EGR gas to flow into the shell 410, and circulates cooling water through the shell 410 to cool the EGR gas in the tubes 440. To do. Note that headers that are provided at both ends of the shell 410 and guide the EGR gas are not shown.

シェル４１０は、２枚のコ字状プレート４１１，４１２を組み合わせ、上側面４１３、下側面４１４、一横側面４１５、他横側面４１６を備えた略四角筒状に形成されている。そして、シェル４１０には、冷却水導入口４５０として隣接配置される２つの冷却水導入口４５１，４５２と、冷却水排出口４６０とが開設される。本例では、冷却水導入口４５１，４５２にはアダプタ部材（図示していない）を、また、冷却水排出口４６０には配水管部材（図示していない）を接続している。   The shell 410 is formed by combining two U-shaped plates 411 and 412, and is formed in a substantially rectangular tube shape having an upper side 413, a lower side 414, one lateral side 415, and the other lateral side 416. In the shell 410, two cooling water inlets 451 and 452 that are adjacently arranged as the cooling water inlet 450 and a cooling water outlet 460 are opened. In this example, an adapter member (not shown) is connected to the cooling water inlets 451 and 452, and a water pipe member (not shown) is connected to the cooling water outlet 460.

冷却水導入口４５１は、シェル４１０の上側面４１３に開設された上面側導入部４５１ａと、一横側面４１５に開設された横面側導入部４５１ｂとで形成されており、上面側導入部４５１ａと横面側導入部４５１ｂとは連続して形成されて冷却水導入口４５１を形成する。同様に、冷却水導入口４５２は、上面側導入部４５２ａと横面側導入部４５２ｂとから構成されており、上面側導入部４５２ａ及び横面側導入部４５２ｂとは連続して形成されて冷却水導入口４５２を形成する。そして、冷却水導入口４５１と冷却水導入口４５２との間には、上側面４１３と一横側面４１５とが連続する稜部４１７が形成されている。そしてアダプタ部材は、冷却水導入口４５０に冷却水導入口４５１と冷却水導入口４５２とを覆い冷却水を導入する。   The cooling water introduction port 451 is formed by an upper surface side introduction portion 451a established on the upper side surface 413 of the shell 410 and a lateral surface side introduction portion 451b established on one lateral side surface 415, and the upper surface side introduction portion 451a. And the lateral surface side introduction portion 451b are formed continuously to form a cooling water introduction port 451. Similarly, the cooling water introduction port 452 includes an upper surface side introduction portion 452a and a lateral surface side introduction portion 452b, and the upper surface side introduction portion 452a and the lateral surface side introduction portion 452b are continuously formed and cooled. A water inlet 452 is formed. A ridge portion 417 in which the upper side surface 413 and the one side surface 415 are continuous is formed between the cooling water introduction port 451 and the cooling water introduction port 452. The adapter member covers the cooling water inlet 451 and the cooling water inlet 452 in the cooling water inlet 450 and introduces the cooling water.

従って本例に係るＥＧＲクーラ４００によれば、アダプタ部材から流入する冷却水は上面側導入部４５１ａ，４５２ａ及び横面側導入部４５１ｂ、４５２ｂからシェル４１０内に導入された結果、シェル４１０の隅部や、チューブ４４０に邪魔をされ冷却水の淀みが発生しやすい領域にも効率よく流れる。このため、冷却水の局所的な沸騰が防止され、ＥＧＲクーラ４００の破損を防いでＥＧＲクーラ４００の性能を最大限に引き出すことができる。また、本例に係るＥＧＲクーラ４００では、冷却水導入口４５１，４５２や、上面側導入部４５１ａ，４５２ａ、横面側導入部４５１ｂ、４５２ｂとの開口面積を変更すれば、ＥＧＲクーラのシェルの大きさやチューブの配列、冷却水排出口の位置によって変化するシェル内の冷却水の流れ状態を最良となるように調整することができる。さらに、本発明ではＥＧＲクーラの外観形状を大きく変更する必要がなく、ＥＧＲクーラを車両に搭載するに際して影響を与えない他、冷却水を最適な流れにして冷却効率を高めることができるので、冷却水の量を減らすことができ、冷却水ポンプへの負担を軽減させることができる。また、本例によれば、冷却水導入口４５１と、冷却水導入口４５２との間に上側面４１３と一横側面４１５とを連結する稜部４１７が形成されているので、シェル４１０の剛性を高いものとすることができる。   Therefore, according to the EGR cooler 400 according to the present example, the cooling water flowing from the adapter member is introduced into the shell 410 from the upper surface side introduction portions 451a and 452a and the lateral surface side introduction portions 451b and 452b. It flows efficiently also to the part and the region where the tube 440 is obstructed and the stagnation of the cooling water is likely to occur. For this reason, local boiling of cooling water is prevented, damage to the EGR cooler 400 is prevented, and the performance of the EGR cooler 400 can be maximized. Further, in the EGR cooler 400 according to this example, if the opening areas of the cooling water inlets 451 and 452 and the upper surface side introducing portions 451a and 452a and the lateral surface side introducing portions 451b and 452b are changed, the shell of the EGR cooler is changed. The flow state of the cooling water in the shell, which changes depending on the size, the arrangement of the tubes, and the position of the cooling water discharge port, can be adjusted to be the best. Furthermore, in the present invention, it is not necessary to greatly change the external shape of the EGR cooler, and it does not affect the mounting of the EGR cooler on the vehicle. The amount of water can be reduced, and the burden on the cooling water pump can be reduced. Further, according to the present example, the ridge portion 417 that connects the upper side surface 413 and the one lateral side surface 415 is formed between the cooling water introduction port 451 and the cooling water introduction port 452, so that the rigidity of the shell 410 is increased. Can be high.

本発明の第１実施態様に係るＥＧＲクーラの外観を示す斜視図である。It is a perspective view which shows the external appearance of the EGR cooler which concerns on the 1st embodiment of this invention. 図１に示したＥＧＲクーラをアダプタ部材を取り外して示した斜視図である。It is the perspective view which removed the adapter member and showed the EGR cooler shown in FIG. 図１に示したＥＧＲクーラの構造を示す図１中Ａ−Ａ線に相当する断面図であるIt is sectional drawing equivalent to the AA line in FIG. 1 which shows the structure of the EGR cooler shown in FIG. 図１に示したＥＧＲクーラのアダプタ部材を示すものであり、（ａ）は斜視図、（ｂ）は平面図である。The adapter member of the EGR cooler shown in FIG. 1 is shown, (a) is a perspective view, (b) is a top view. 図１に示したＥＧＲクーラのアダプタ部材を示す図４（ｂ）中のＢ−Ｂ線に相当する断面図である。It is sectional drawing equivalent to the BB line in FIG.4 (b) which shows the adapter member of the EGR cooler shown in FIG. ＥＧＲクーラ内の冷却水速度の分布を示すものであり、（ａ）は比較例のＥＧＲクーラの解析結果示す分布図、（ｂ）は第１実施例に係るＥＧＲクーラの解析結果を示す分布図、（ｃ）は第２実施例に係るＥＧＲクーラの解析結果を示す分布図、（ｄ）は解析個所を示す説明図である。The distribution of the cooling water speed in an EGR cooler is shown, (a) is a distribution diagram showing an analysis result of the EGR cooler of the comparative example, (b) is a distribution diagram showing an analysis result of the EGR cooler according to the first embodiment. (C), Distribution diagram which shows the analysis result of the EGR cooler which concerns on 2nd Example, (d) is explanatory drawing which shows an analysis location. 比較対象としたＥＧＲクーラの構成を示す断面図である。It is sectional drawing which shows the structure of the EGR cooler made into the comparison object. 本発明の第２実施態様に係るＥＧＲクーラをアダプタ部材を取り外して示した斜視図である。It is the perspective view which removed the adapter member and showed the EGR cooler which concerns on the 2nd embodiment of this invention. 本発明の第３実施態様に係るＥＧＲクーラをアダプタ部材を取り外して示した斜視図である。It is the perspective view which removed the adapter member and showed the EGR cooler which concerns on the 3rd embodiment of this invention. 従来のＥＧＲクーラにおける冷却水の流れを示す図であり、（ａ）は正面図、（ｂ）は側面図である。It is a figure which shows the flow of the cooling water in the conventional EGR cooler, (a) is a front view, (b) is a side view. 従来のＥＧＲクーラにおける冷却水の淀みの個所を示す模式断面図である。It is a schematic cross section which shows the location of the stagnation of the cooling water in the conventional EGR cooler. 従来のＥＧＲクーラにおける冷却水の淀みの個所を示す模式断面図である。It is a schematic cross section which shows the location of the stagnation of the cooling water in the conventional EGR cooler.

符号の説明Explanation of symbols

１００…ＥＧＲクーラ
１１１，１１２…コ字状プレート
１１０…シェル
１１３…上側面
１１４…下側面
１１５…一横側面（横側面）
１１６…他横側面
１２０…アダプタ部材
１２１…湾曲筒部
１２１ａ…シェル側部
１２１ｂ…導入側部
１２３…取付端部
１２４…接合部
１２５…接合部
１２６…穴部
１２７…給水フランジ部
１３０…配水管部材
１３１…筒部
１３２…シェル側フランジ部
１３３…排水側フランジ部
１４０…チューブ
１４１…排気チューブ
１４２…ダボ
１５０…冷却水導入口
１５１…上面側導入部
１５２…横面側導入部
１６０…冷却水排出口
２００…ＥＧＲクーラ
２１０…シェル
２１３…上側面
２２０…アダプタ部材
２４０…チューブ
２３０…配水管部材
２５０…冷却水導入口
２６０…冷却水排出口
３００…ＥＧＲクーラ
３１０…シェル
３１１，３１２…コ字状プレート
３１３…上側面
３１４…下側面
３１５…一横側面
３１６…他横側面
３１７…稜部
３４０…チューブ
３５０…冷却水導入口
３５１…上面側導入部
３５２…横面側導入部
３６０…冷却水排出口
４００…ＥＧＲクーラ
４１０…シェル
４１１，４１２…コ字状プレート
４１３…上側面
４１４…下側面
４１５…一横側面
４１６…他横側面
４１７…稜部
４４０…チューブ
４５０…冷却水導入口
４５１ 冷却水導入口
４５２ 冷却水導入口
４５１ａ，４５２ａ…上面側導入部
４５１ｂ，４５２ｂ…横面側導入部
４６０…冷却水排出口 DESCRIPTION OF SYMBOLS 100 ... EGR cooler 111,112 ... U-shaped plate 110 ... Shell 113 ... Upper side surface 114 ... Lower side surface 115 ... One side surface (lateral side surface)
116: Other lateral surface 120 ... Adapter member 121 ... Curved cylinder part 121a ... Shell side part 121b ... Introduction side part 123 ... Mounting end part 124 ... Joining part 125 ... Joining part 126 ... Hole 127 ... Water supply flange part 130 ... Water distribution pipe Member 131 ... Cylinder part 132 ... Shell side flange part 133 ... Drain side flange part 140 ... Tube 141 ... Exhaust tube 142 ... Dowel 150 ... Cooling water inlet 151 ... Top side inlet 152 ... Horizontal side inlet 160 ... Cooling water Ejector 200 ... EGR cooler 210 ... Shell 213 ... Upper side surface 220 ... Adapter member 240 ... Tube 230 ... Water pipe member 250 ... Cooling water inlet 260 ... Cooling water outlet 300 ... EGR cooler 310 ... Shell 311 312 ... Plate 313 ... upper side 314 ... lower side 315 ... one side 316 ... other side 317 ... ridge 340 ... chu 350 ... Cooling water introduction port 351 ... Upper surface side introduction portion 352 ... Horizontal surface side introduction portion 360 ... Cooling water discharge port 400 ... EGR cooler 410 ... Shell 411, 412 ... U-shaped plate 413 ... Upper side surface 414 ... Lower side surface 415 ... one lateral surface 416 ... other lateral surface 417 ... ridge 440 ... tube 450 ... cooling water introduction port 451 cooling water introduction port 452 cooling water introduction ports 451a and 452a ... upper surface side introduction portions 451b and 452b ... lateral surface side introduction portion 460 ... Cooling water outlet

Claims (5)

冷却水導入口及び冷却水排出口を備えた中空状のシェルと、前記シェル内部に配置されＥＧＲガスが通過する複数のチューブとを備えたＥＧＲクーラにおいて、
前記シェルは、上側面と横側面とを備え、前記冷却水導入口は、前記上側面側から冷却水を導入する上面側導入部と、前記横側面側から冷却水を導入する横面側導入部とを備えていることを特徴とするＥＧＲクーラ。 In an EGR cooler comprising a hollow shell having a cooling water inlet and a cooling water outlet, and a plurality of tubes arranged inside the shell and through which EGR gas passes,
The shell includes an upper side surface and a lateral side surface, and the cooling water introduction port has an upper surface side introduction portion for introducing cooling water from the upper side surface side, and a lateral surface side introduction for introducing cooling water from the lateral side surface side. And an EGR cooler. 前記冷却水導入口の上面側導入部と前記横面側導入部とは連続して形成されていることを特徴とする請求項１記載のＥＧＲクーラ。   The EGR cooler according to claim 1, wherein the upper surface side introduction portion and the lateral surface side introduction portion of the cooling water introduction port are formed continuously. 前記冷却水導入口は複数配置されていることを特徴とする請求項２記載のＥＧＲクーラ。   The EGR cooler according to claim 2, wherein a plurality of the cooling water inlets are arranged. 前記上面側導入部と前記横面側導入部とは、前記上側面及び前記横側面の接合部を挟んで配置されていることを特徴とする請求項１記載のＥＧＲクーラ。   2. The EGR cooler according to claim 1, wherein the upper surface side introduction portion and the lateral surface side introduction portion are disposed with a joint portion between the upper side surface and the lateral side surface interposed therebetween. 前記シェルには冷却水を前記冷却水導入口に導く筒状のアダプタ部材が配置されており、
前記アダプタ部材は、前記上面側導入部及び前記横面側導入部を覆ってシェルに取り付けられていることを特徴とする請求項１乃至４のいずれか記載のＥＧＲクーラ。 A cylindrical adapter member that guides cooling water to the cooling water inlet is disposed in the shell,
5. The EGR cooler according to claim 1, wherein the adapter member is attached to a shell so as to cover the upper surface side introduction portion and the lateral surface side introduction portion. 6.
JP2007287727A 2007-11-05 2007-11-05 Egr cooler Pending JP2009114923A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013024109A (en) * 2011-07-20 2013-02-04 Toyota Motor Corp Exhaust gas cooling device
WO2013022072A1 (en) * 2011-08-10 2013-02-14 臼井国際産業株式会社 Multi-tube type heat exchanger
WO2013092641A1 (en) * 2011-12-22 2013-06-27 Valeo Termico, S.A. Heat exchanger for gases, in particular for the exhaust gases of an engine
US9217610B2 (en) 2012-07-16 2015-12-22 Caterpillar Inc. Heat exchanger for exhaust gas recirculation
EP3034979A1 (en) * 2014-12-19 2016-06-22 Benteler Automobiltechnik GmbH Exhaust gas heat exchanger
EP3246647A1 (en) * 2016-05-19 2017-11-22 Borgwarner Emissions Systems Spain, S.L.U. Heat exchange device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013024109A (en) * 2011-07-20 2013-02-04 Toyota Motor Corp Exhaust gas cooling device
WO2013022072A1 (en) * 2011-08-10 2013-02-14 臼井国際産業株式会社 Multi-tube type heat exchanger
JP2013053620A (en) * 2011-08-10 2013-03-21 Usui Kokusai Sangyo Kaisha Ltd Multi-tube type heat exchanger
WO2013092641A1 (en) * 2011-12-22 2013-06-27 Valeo Termico, S.A. Heat exchanger for gases, in particular for the exhaust gases of an engine
US9791215B2 (en) 2011-12-22 2017-10-17 Valeo Termico, S.A. Heat exchanger for gases, in particular for the exhaust gases of an engine
US9217610B2 (en) 2012-07-16 2015-12-22 Caterpillar Inc. Heat exchanger for exhaust gas recirculation
EP3034979A1 (en) * 2014-12-19 2016-06-22 Benteler Automobiltechnik GmbH Exhaust gas heat exchanger
US9995250B2 (en) 2014-12-19 2018-06-12 Benteler Automobiltechnik Gmbh Exhaust gas heat exchanger
EP3246647A1 (en) * 2016-05-19 2017-11-22 Borgwarner Emissions Systems Spain, S.L.U. Heat exchange device
CN107401939A (en) * 2016-05-19 2017-11-28 博格华纳排放***西班牙有限责任公司 Heat-exchange device

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